President Vladimir Putin said that no American diplomats would be expelled in retaliation to Washington's move, and instead wished the American people a happy new year.
FSB agents arrested seven alleged terrorists in Dagestan, accusing them of plotting a series of New Year's attacks in Moscow.
The three major U.S. stock indexes took a nosedive ahead of the White House's announcement that it would extend sanctions against Russia for alleged hacking.
Don't forget the children of Aleppo in 2017.
The past year may be one to forget for many, but experts are already warning that there will be plenty to be concerned about in 2017.
Negotiations between the warring parties would begin in Kazakhstan if the ceasefire is a success, Turkey’s state-run Anadolu Agency reported Wednesday citing a source.
As the year 2016 comes to a close, here's a look at some of the major air disasters of the year.
The military plane, which was carrying 92 people, crashed Sunday while on its way from Sochi to Latakia province in western Syria.
Russian authorities said technical or human error were the most likely possibilities for the plane crash as a massive search and rescue operation began to recover evidence of what happened to the flight.
A massive search operation is underway "round the clock" to find the bodies of those on board the jet, which went down Sunday in the Black Sea.
The president-elect spent Christmas in Florida at his Mar-a-Lago estate.
The Russian travel minister said it was too early to determine the cause of the crash, adding the department is considering all possible reasons, including a terror attack.
The plane, carrying a total of 84 passengers and eight crew members, was en route to Latakia province in western Syria.
Nine countries around the world are believed to possess nuclear weapons, here they are ranked by the size of their arsenal.
There might not be much the U.S. can do to stop a nuclear attack.
"I would prefer Islam not to be mentioned in vain alongside terrorism," the Russian president said at his annual year-end press conference Friday.
"Let it be an arms race. We will outmatch them at every pass and outlast them all," the president-elect said.
On Thursday, the president-elect alarmed nonproliferation experts when he called for the U.S. to "greatly strengthen and expand its nuclear capability."
The Russian president also called for the country’s military to develop missiles that can penetrate any missile-defense system.
A leaked Department of Defense memo reportedly shows President-elect Donald Trump's biggest security concerns, and Russia isn't one of them.
A shaky ceasefire deal and international conflict could exacerbate the Syrian crisis.
Majority Leader Mitch McConnell, in an interview Monday evening, vowed to get to the bottom of the issue but said a new Senate committee to look into cybersecurity was unnecessary.